USGS Water-Year Summary 2018
07124410 PURGATOIRE RIVER BELOW TRINIDAD LAKE, CO
LOCATION - Lat 37°08'38", long 104°32'50" referenced to North American Datum of 1927, in NE 1/4 SW 1/4 sec.27, T.33 S., R.64 W., Las Animas County, CO, Hydrologic Unit 11020010, on left bank of dam outlet 500 ft downstream from base of Trinidad Dam, 0.8 mi upstream from Santa Fe Railroad bridge, and 3.0 mi southwest of courthouse in Trinidad.
DRAINAGE AREA - 673 mi².
- WDR-US-2011: Drainage area.
PERIOD OF RECORD - December 1976 to current year.
GAGE - Water-stage recorder with satellite telemetry, crest-stage gage, and concrete control. Datum of gage is 6,073.64 ft above NGVD of 1929 (levels by U.S. Army, Corps of Engineers). Since Apr. 5, 2006, supplementary recording point about 212 ft downstream at same datum, for use when flows exceed approximately 1,000 ft³/s. Prior to Apr. 5, 2006, supplementary water-stage recorder about 1,000 ft downstream at same datum, used when flows exceeded approximately 1,500 ft³/s.
EXTREMES FOR PERIOD OF RECORD - Maximum discharge, 1,260 ft³/s, Aug. 6, 2004, from rating curve extended above 1,160 ft³/s, gage height 8.01 ft.